Deterding, S. (2015). The lens of intrinsic skill atoms: A method for gameful design. Human-Computer Interaction, 30(3-4), 294-335.
Gee, J. P. (2003). What digital games have to teach us about learning and literacy . New York: Palgrave Macmillan.
Gee, J. (2009, August). Deep learning properties of good digital games. In Routledge Taylor & Francis Group.
Harlow, H. F., Harlow, M. K., & Meyer, D. R. (1950). Learning motivated by a manipulation drive. Journal of Experimental Psychology, 40(2), 228.
Kapp, K. M. (2012a). Games, Gamification, and the Quest for Learner Engagement. T+D, 66(6), 64-68.
Kapp, K. M. (2012b). The gamification of learning and instruction: game-based methods and strategies for training and education. John Wiley & Sons.
Kapp, K. M., Blair, L., & Mesch, R. (2014). The gamification of learning and instruction fieldbook: Ideas into practice. John Wiley & Sons.
Koepp, M. J., Gunn, R. N., Lawrence, A. D., Cunningham, V. J., Dagher, A., Jones, T., ... & Grasby, P. M. (1998). Evidence for striatal dopamine release during a video game. Nature, 393(6682), 266-268.
Koster, R. (2013). Theory of fun for game design. O'Reilly Media, Inc..
Malone, T. W., & Lepper, M. R. (1987). Making learning fun: A taxonomy of intrinsic motivations for learning. In R. E. Snow & M. J. Farr (Eds.), Aptitude, learning and instruction: III. Cognitive and affective process analyses (pp. 223–253). Hilsdale, NJ: Erlbaum.
Marczewski, A. (2013). Gamification: a simple introduction. Andrzej Marczewski.
McDonald, P. (2010). Game over? When play becomes mechanical. Retrieved January 25, 2014, from http://planninginhighheels.com/2010/11/25/game-over-when-play-becomes-mechanical/
McGonigal, J. (2011a). Reality is broken: Why games make us better and how they can change the world . New York: Penguin Press.